[ARM] pxa: simplify DMA register definitions

1. DRCMRxx is no longer recommended, use DRCMR(xx) instead, and
   pass DRCMR index by "struct resource" if possible

2. DCSRxx, DDADRxx, DSADRxx, DTADRxx, DCMDxx is never used, use
   DCSR(), DDADR(), DSADR(), DTADR(), DCMD() instead

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

sound/arm/pxa2xx-ac97.c

@@ -215,7 +215,7 @@ static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = {
 	.name			= "AC97 PCM out",
 	.dev_addr		= __PREG(PCDR),
-	.drcmr			= &DRCMRTXPCDR,
+	.drcmr			= &DRCMR(12),
 	.dcmd			= DCMD_INCSRCADDR | DCMD_FLOWTRG |
 				  DCMD_BURST32 | DCMD_WIDTH4,
 };
@@ -223,7 +223,7 @@ static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = {
 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_in = {
 	.name			= "AC97 PCM in",
 	.dev_addr		= __PREG(PCDR),
-	.drcmr			= &DRCMRRXPCDR,
+	.drcmr			= &DRCMR(11),
 	.dcmd			= DCMD_INCTRGADDR | DCMD_FLOWSRC |
 				  DCMD_BURST32 | DCMD_WIDTH4,
 };